Water-soluble fertilizer with national standards

Full soluble fertilizer, water soluble
fertilizer macronutrients what criteria? German International Group
professionals, the new land, said water-soluble fertilizer (Water Soluble
Fertilizer, referred WSF), is a fully water-soluble multi-compound fertilizer,
it can rapidly dissolved in water, is more easily absorbed by crops, but their
absorption and utilization is relatively high, more critical is that it can be
applied to drip irrigation and other agricultural facilities, water and
fertilizer to achieve integration, to achieve the effectiveness of the
province’s water and fertilizer saving labor . In general, water-soluble
fertilizer can contain all the nutrients needed for crop growth, such as N, P,
K, Ca, Mg, S and trace elements. For water-soluble fertilizer standards with
new changes, details below.

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First, a large number of water-soluble
fertilizer elements new standard changes

1. The new standard increased product
types: a large number of elements from the original is only one water-soluble
fertilizer (trace element type), was changed to a large number of water-soluble
fertilizer elements (trace element type) and a large number of elements of
water-soluble fertilizer (in the amount of the element type); while increasing
the product should contain at least two major elements of the claim.

2. The new standard modifies the single
macronutrient minimum content requirement of not less than 4.0% or 40g / L; a lot
of elements of water-soluble fertilizer (trace element type) of trace elements
(of copper, iron, manganese, zinc, boron, molybdenum) content Index increased
from not less than 0.5%, or 5.0 g / L revised to 0.2% -3.0%, or 2g / L-30 g /
L.

3. The new standard increased the
molybdenum content is less than 0.5%, or 5 g / L requirements.

6. The new revised standard single large
number of elements measured value and indicated value of negative deviation
requirements: a single large number of elements measured value and indicated
value should be less than the absolute value of the negative deviation of 1.5%
or 15g /